Developmental Anomalies of Teeth

Developmental Anomalies of Teeth

Hutchinson's Teeth

• Characterized by notched or peg-shaped incisors
• Caused by congenital syphilis
• Teeth are smaller and more widely spaced than normal
• Often accompanied by other congenital defects

Dental Agenesis (Hypodontia)

• Failure of one or more teeth to develop
• Can be isolated or part of a larger syndrome (e.g. ectodermal dysplasias)
• Affects approximately 2-4% of the population
• More common in permanent teeth than primary teeth

Dens In Dente

• Also known as "dens invaginatus"
• Developmental anomaly of tooth development
• Characterized by enamel-lined invagination in the crown or root of the tooth
• Can be classified into three types based on severity
• Often associated with other developmental anomalies (e.g. taurodontism)

Dental Fusion

• Union of two or more teeth
• Can occur in primary or permanent teeth
• Classified into two types:
  • True fusion: teeth are joined by dentin and enamel
  • Fusion by concrescence: teeth are joined by cementum only
• Can cause spacing and alignment issues in the dental arch

Enamel Hypoplasia

• Defect in enamel formation
• Can be caused by genetic or environmental factors (e.g. nutritional deficiencies)
• Characterized by enamel that is thin, soft, or missing
• Can be localized to specific teeth or affect entire dentition
• Increases risk of tooth decay and sensitivity

Developmental Anomalies of Teeth

Hutchinson's Teeth

• Characterized by notched or peg-shaped incisors, smaller and more widely spaced than normal
• Caused by congenital syphilis
• Often accompanied by other congenital defects

Dental Agenesis (Hypodontia)

• Failure of one or more teeth to develop
• Can be isolated or part of a larger syndrome (e.g. ectodermal dysplasias)
• Affects approximately 2-4% of the population
• More common in permanent teeth than primary teeth

Dens In Dente

• Also known as "dens invaginatus"
• Characterized by enamel-lined invagination in the crown or root of the tooth
• Can be classified into three types based on severity
• Often associated with other developmental anomalies (e.g. taurodontism)

Dental Fusion

• Union of two or more teeth
• Can occur in primary or permanent teeth
• Classified into two types:
  • True fusion: teeth are joined by dentin and enamel
  • Fusion by concrescence: teeth are joined by cementum only
• Can cause spacing and alignment issues in the dental arch

Enamel Hypoplasia

• Defect in enamel formation
• Can be caused by genetic or environmental factors (e.g. nutritional deficiencies)
• Characterized by enamel that is thin, soft, or missing
• Can be localized to specific teeth or affect entire dentition
• Increases risk of tooth decay and sensitivity